Multilayer Energy Dissipating Inlet Column (MEDIC) MEDIC consists of the following 3 major components: 1. A center influent pipe, which has several flow influent ports in the wall of the pipe located between sludge blanket and clarifier liquid surface; 2. A plurality of perforated and concentric columns; 3. A circular cover, which closes the bottom of the multilayer column. Each of the perforated and concentric columns has different radii. In the wall of each perforated column many flow inlet ports are mounted for flow going through. The layout of the flow inlet ports between any two adjacent perforated columns must be staggered along both the tangential and vertical direction or otherwise staggered along at least one direction of them in order to create a puzzled flow path and flow impingement on each layer of the MEDIC. A circular cover closes the bottom of the multilayer column and the small drainage holes are distributed on the bottom cover (US Patent No. 7378027). www.hydrosims.com
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